TY  - BOOK
AU  - Gopal,Brij
AU  - Bhardwaj,N.
TI  - Elements of ecology
U1  - 581.5 
PY  - 1979///
CY  - new Delhi
PB  - Vikas Publishing House Pvt. Ltd.
KW  - Botany
KW  - Plant Ecology
KW  - Elements of ecology
ER  -